The problem is that it -- at least my feed -- is not true positivity, it's fake positivity, which brings a strong negative reaction in me. Gurus talking entrepreneur-, startup- or hiring- bullshit, recruiters extolling the virtues of their profession, "if you're having a bad time with COVID19, here's something to stay positive" [bullshit follows].
LinkedIn is useful as an online resume. But the feed is mostly garbage. Fake positivity is the worst.